Galant L4-2.4L (4G69) (2004)
STEP 9. Check the wiring harness between immobilizer-ECU connector C-124 (terminal 3) and PCM connector B-19 (terminal 13).
NOTE: Also check intermediate connector C-29 ,check the wires. If intermediate connector C-29 is damaged, repair or replace them. Refer to Harness
Connector Inspection.
Q: Are the wiring harness between immobilizer-ECU connector C-124 (terminal 3) and PCM connector B-19 (terminal 13) in good condition?
YES: Go to Step 10.
NO: Repair the wiring harness. Confirm that scan tool MB991958 communicates normally.
STEP 10. Replace the immobilizer-ECU or PCM.
Replace the immobilizer-ECU or PCM.
Q: Did the communication with the scan tool become possible after replacing the immobilizer-ECU or the PCM?
YES: Register the password (secret code) and encrypted code, refer to Antitheft and Alarm Systems/Service and Repair/How To Register Encrypted
Code.
NO: Replace the PCM. Then register the password (secret code) and encrypted code (Refer to Antitheft and Alarm Systems/Service and Repair/How
To Register Encrypted Code).
Inspection Procedure 2
The Ignition Key cannot be Registered.
TECHNICAL DESCRIPTION (COMMENT)
The ignition key transponder or the immobilizer-ECU is suspected to be defective.
TROUBLESHOOTING HINTS
-
Malfunction of the ignition key
-
Malfunction of immobilizer-ECU
Required Special Tools:
-
MB991958: Scan Tool (MUT-III Sub Assembly)
-
MB991824: Vehicle Communication Interface (V.C.I.)
-
MB991827: MUT-III USB Cable
-
MB991911: MUT-III Main Harness A (Vehicles with CAN communication system)
STEP 1. Using scan tool MB991958, read the diagnostic trouble code.